2013 Envirothon

order?
hemiptera
family?
gerridae
number of species in North America?
47
Also called?
pond skaters; Jesus bugs because they seem to walk on water
How do they steer?
with hind legs and unequal strokes of middle legs
describe legs
three pairs of segmented legs on thorax;skinny and long to help distribute body weight on water surface
Where are claws?
2 claws on segmented legs
Gills?
no
How do they walk on the water?
middle and hind legs touch water; front legs are held up while middle legs row
Do claws on upper legs break surface tension?
no
What are at the ends of legs?
non-wettable hairs
diet?
terrestrial and aquatic insects, alive and dead
Food for?
game fish; predaceous water insects
Habitat?
surface of streams; lakes; ponds; marshes; ditches
movement?
skate on surface of water
breathing?
openings in sides of bodies (spiracles); when diving a thin layer of air is trapped on the unwettable hairs
water quality indicator?
Group II: can exist under a wide range of water quality conditions; a large number indicates Moderate water quality
Eggs?
loose eggs usually deposited underwater attached to solid objects
When do adults lay eggs?
spring; develop in summer
When do adults repeat cycle?
over winter